Background
The steel plate beam in the steel plate combined bridge is a steel structure member formed by welding an upper flange steel plate, a steel web plate and a lower flange steel plate. The construction method of the multi-span continuous steel plate combined beam bridge is generally to erect steel beams and then construct a concrete bridge deck. The construction method of the steel beam is various, such as the construction by a support method, the construction by a pushing method and the like. The construction method of the steel plate beam by adopting the support method is the most common construction method, and the concrete construction method comprises the following steps: the steel plate girder is usually processed into a plurality of sections in a factory, transported to a construction site to be spliced into a large-section girder body, then the large-section girder body is hoisted to a pier by adopting a truck crane, and finally the sections are connected at a bridge position, so that the continuous steel plate girder is formed.
The traditional steel plate girder construction method has two types. One method is to build a temporary pier: taking a 4-span continuous beam as an example for explanation, firstly, hoisting a beam body segment of a first span and supporting the beam body segment on a No. 1 pier, a No. 2 pier and a temporary pier of a second span; then hoisting the beam body segment of the second span, supporting the beam body segment on the temporary pier and the No. 3 pier of the second span, and splicing the first span beam segment and the second span beam segment on the temporary pier of the second span; then hoisting the beam body segment of the third span, supporting the beam body segment on a temporary pier and a No. 4 pier of the third span, and splicing a second span beam segment and a third span beam segment on the temporary pier of the third span; and finally, hoisting the beam body segment of the fourth span, supporting the beam body segment on the temporary pier and the pier No. 4 of the fourth span, and splicing the third span beam segment and the fourth span beam segment on the temporary pier of the fourth span. This construction method requires the temporary piers to be provided at the end of each beam section, and the temporary piers to be removed after the steel beams are integrally formed. The setting up and dismantling of the temporary piers requires a certain amount of material and labor costs.
The other is that a double support is arranged on the middle pier: taking a two-span continuous beam as an example for explanation, 2 large-section steel beams are manufactured at a bridge position, and the length of a beam body section of each span is equal to the span of a bridge. During construction, each beam body segment is hoisted and placed on two adjacent piers, and then the adjacent beam bodies are connected to form a continuous connection structure. The construction method needs to arrange two rows of supports in the upper longitudinal bridge direction of the middle pier, and needs the size of the top of the middle pier along the longitudinal bridge direction to be larger than the size of the support arranged in only one row in order to arrange the two rows of supports in the longitudinal bridge direction, so that the detailed structure is complex. The construction method has the advantages that the use amount of the support and pier materials are more than those of other methods, and the cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a connection structure of steel sheet roof beam to solve the problem that above-mentioned prior art exists, simplify the construction process of steel sheet roof beam, and reduce construction cost.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a connection structure of steel plate roof beam, including two mutual anastomotic connecting portion, two connecting portion are located two different steel plate roof beams, connecting portion are including setting up the step of the tip of steel plate roof beam with set firmly the connecting plate of step both sides, two in the connecting portion the connecting plate one-to-one, corresponding two the connecting plate passes through the bolt and links firmly.
Preferably, the connecting plate includes last riser, horizontal plate and the lower riser that connects gradually.
Preferably, arc transition plates are respectively arranged between the upper vertical plate and the horizontal plate and between the horizontal plate and the lower vertical plate.
Preferably, the upper vertical plate, the horizontal plate, the lower vertical plate and the arc transition plate are all edge-wrapped steel plates.
Preferably, the upper vertical plate, the horizontal plate and the lower vertical plate are respectively welded with the steel plate girder.
Preferably, the upper vertical plate, the horizontal plate and the lower vertical plate are respectively provided with a bolt hole.
Preferably, the web plate of the steel plate beam is provided with a vertical stiffening plate and a longitudinal stiffening plate which are respectively connected with the connecting plate.
Preferably, the connecting plate is flush with the surface of the step.
The utility model discloses for prior art gain following technological effect:
the utility model discloses a connection structure of steel sheet roof beam's simple structure, it is convenient to connect, can greatly simplify the construction process of steel sheet roof beam to reduce construction cost.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model aims at providing a connection structure of steel sheet roof beam to solve the problem that above-mentioned prior art exists, simplify the construction process of steel sheet roof beam, and reduce construction cost.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to 5: the embodiment provides a connecting structure of steel plate beams, which comprises two connecting parts which are matched with each other, wherein one connecting part is positioned at the end part of a first steel plate beam 4, and the other connecting part is positioned at the end part of a second steel plate beam 5.
Taking the connecting part on the first steel plate beam 4 as an example, the connecting part comprises a step arranged at the end part of the first steel plate beam 4 and connecting plates fixedly arranged at two sides of the step, the connecting plates in the two connecting parts are in one-to-one correspondence, and the two corresponding connecting plates are fixedly connected through bolts 17.
Specifically, the connecting plate crosses cab apron 12, horizontal plate 15, circular arc including the last riser 14, the circular arc that connect gradually and crosses cab apron 12 and lower riser 16, and the setting that the circular arc crossed cab apron 12 can avoid going up riser 14, lower riser 16 and the crossing department cross-section change of horizontal plate 15 comparatively suddenly, leads to this position to appear stress too big condition easily. In the embodiment, the upper vertical plate 14, the horizontal plate 15, the lower vertical plate 16 and the arc transition plate 12 are all made of edge-wrapped steel plates. The upper vertical plate 14, the horizontal plate 15 and the lower vertical plate 16 are respectively welded with the steel plate girder, and the upper vertical plate 14, the horizontal plate 15 and the lower vertical plate 16 are respectively provided with a bolt 17 hole 13.
In the embodiment, the connecting part at the end part of the first steel plate girder 4 plays a supporting role, and the connecting part at the end part of the second steel plate girder 5 plays a lapping role, so that in order to facilitate the installation of the bolts 17 and the quick splicing on site, the diameter of the bolt 17 hole 13 on the connecting plate at the end part of the first steel plate girder 4 can be set to be 2mm larger than the diameter of the bolt 17 hole 13 on the connecting plate at the end part of the second steel plate girder 5.
And a web plate of the steel plate beam is provided with a vertical stiffening plate 10 and a longitudinal stiffening plate 11 which are respectively connected with the connecting plate. The vertical stiffening plates 10 and the longitudinal stiffening plates 11 are arranged to prevent local instability caused by overlarge stress of the web near the connecting part, and the vertical stiffening plates 10 and the longitudinal stiffening plates 11 are welded together at the intersection.
Fig. 1 shows a schematic structural diagram of a two-span continuous beam adopting a connection structure of a steel plate beam in this embodiment, which includes a first pier 1, a second pier 2, a third pier 3, a first steel plate beam 4 and a second steel plate beam 5, where the first steel plate beam 4 is erected on the first pier 1 and the second pier 2, the right end of the first steel plate beam 4 and the left end of the second steel plate beam 5 are respectively provided with a connection portion, that is, the right end of the first steel plate beam 4 and the left end of the second steel plate beam 5 are connected together through the connection structure of the steel plate beams in this embodiment, and the right end of the second steel plate beam 5 is erected on the third pier 3.
Fig. 4 is a schematic structural diagram of a scheme of a four-span continuous beam adopting the connection structure of the steel plate beam in this embodiment, which includes a first pier 1, a second pier 2, a third pier 3, a fourth pier 7, a fifth pier 8, a first steel plate beam 4, a second steel plate beam 5, and a third steel plate beam 6, where the first steel plate beam 4 is erected on the first pier 1 and the second pier 2, the right end of the first steel plate beam 4, the left end of the second steel plate beam 5, the right end of the second steel plate beam 5, and the left end of the third steel plate beam 6 are respectively provided with a connection portion, that is, the right end of the first steel plate beam 4, the left end of the second steel plate beam 5, the right end of the second steel plate beam 5, and the left end of the third steel plate beam 6 are respectively connected together through the connection structure of the steel plate beam in this embodiment, the right end of the second steel plate beam 5 is erected on the third pier 3, and the third beam 6 is erected on the fourth pier 7 and the fifth pier 8.
Fig. 5 is a schematic structural view of another embodiment of a four-span continuous beam adopting the connection structure of the steel plate beams in this embodiment, which includes a first pier 1, a second pier 2, a third pier 3, a fourth pier 7, a fifth pier 8, a first steel plate beam 4, a second steel plate beam 5, a third steel plate beam 6 and a fourth steel plate beam 9, wherein the first steel plate beam 4 is erected on the first pier 1 and the second pier 2, the right end of the first steel plate beam 4, the left end of the second steel plate beam 5, the right end of the second steel plate beam 5, the left end of the third steel plate beam 6, the right end of the third steel plate beam 6 and the left end of the fourth steel plate beam 9 are respectively provided with a connection portion, that is, the right end of the first steel plate beam 4 is connected with the left end of the second steel plate beam 5, the right end of the second steel plate beam 5 and the left end of the third steel plate beam 6, the right end of the third steel plate beam 6 and the left end of the third steel plate beam 6 through the connection structure of the beams in this, the right end of the second steel plate beam 5 is erected on the third pier 3, the third steel plate beam 6 is erected on the fourth pier 7, and the fourth steel plate beam 9 is erected on the fifth pier 8.
It should be noted that, in this embodiment, the connecting plate is flush with the surface of the step at the end of the steel plate beam, but in practical application, in order to ensure the transverse limit connection of the two connected steel plate beams, it is also feasible to arrange the connecting plate to protrude or indent the surface of the step on the basis of ensuring that the two connecting portions can be matched.
In the description of the present invention, it should be noted that the terms "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.